Singh, Y. K. <br/><br/>
Research methodology  : data presentation  
Dr. Y.K.Singh and Dr. R.B.Bajpai 
 - New Delhi:  APH,   2011. 
 - x, 246p. 
<br/><br/><label>ISBN: </label>9788131302576 
<br/><br/><label>Dewey Class. No.: </label>001.42  / SIR